Dynamo-electric machine.



L. LYNDON.

. DYNAMO ELECTRIC MACHINE.

APPLICATION nun 00m, 1906. RENEWED MAY 18, 1907.

91 3,666. Patented Feb 23, 1909.

Inventor:

AAMAR LQ/NDONI LAMAR LYNDON, OF EAST ORANGE, NEW JERSEYv DYNAMO-ELECTRICI/IACHINE.

Specification of Letters Patent.

Patented Feb. 23, 1909.

Original application filed July 6, 1905, Serial No. 268,321. Dividedand. this application filed October 2, 1906, Serial To all whom it mayconcern:

Be it known that I, LAMAR Lvxoox, a citizen of the United States, andresident of East Orange, county of Essex, State of New Jersey, haveinvented certain new and useful Improvements in Dynamo-ElectricMachines, of which the following is a specification, accompanied bydrawings.

This application is a division of my copending application, Serial No.268,32l, filed July 6, 1905, for a system of electric generation,distribution and control.

This invention relates to dynamo electric machines, more particularly tomachines adapted to be carried by the axle of a car and used for trainlighting, for propelling purposes or for any purpose for which themachine is adapted.

The objects of the invention are to enable a dynamo electric machine tobe applied directly over a shaft or axle which is blocked or providedwith wheels as the case may be at either end so that the dynamo electricmachine cannot he slipped over the end of the axle or shaft. Accordingto this invention the machine is driven from or drives theaxle withoutthe interposition of driving gears or other operative connections andthe invention is preferably applied to certain classes of alternatingcurrent dynamo electric machines, the parts of which may be split orseparated in such manner that they may be placed over the shaft or axleto inclose the same without disturbing the wind ings of the machine.

Illustrations of the classes of dynamo electric machines to which theinvent-ion may be applied are the inductor alternators, machines havingsolid inductors, induction motors having squirrel cage rotors andalternating current dynamos having pole wound rotors. In all of thesemachines both the rotor and stator may be made in halves like a splitpulley with proper flanges and bolts or other devices to join the halvesrigidly together over the shaft or axle, making a continuous rigidcircular structure.

Further objects of the invention will hereinafter appear and to theseends the invention consists of apparatus for carrying out the aboveobjects embodying the features of construction, combinations of elementsand arrangement of parts having the general mode of operationsubstantially as hereinafter fully described and claimed in thisspecification and shown in the :nrcompanying drawings, in which,-

Figure l is a longitudinal elevation partly in section of a dynamoelectric machine embodying the invention applied to a fill axle; Fig. 2is an end elevation partly in transverse section.

Referring to the drawings A represents the axle of a car having thewheels I), and C, are the sills of the truck connected by cross pieces2.

The inductor I is made up of laminations of soft iron, having the propershape to cause shifting and reversal of magnetic lines through themagnetic structure l in which the windings Z are placed. The laminationsin I are held in place on a nonmagnetic spider S, having the usualsupporting and driving spokes S, S and S and the clamping plate N, as iswell known in the art. The spider shaft S is hollow as shown. The entirestructure is split axially into halves and when re-assembled the halvesare held together by the lugs and bolts .lJ on. the spider and clampingplates, and N on the ends of the hollow shaft S. Set screws J passingthrough the hollow shaft S serve to center the structure about the driving axle A, which passes through hollow shaft S, and hold same firmly. Bass wedges or other devices well known in the art may be substituted,however, if desired. \Vith this construction the inductor may be splitby removing bolts I1 and M, the halves put over axle A and again boltedtogether, afte which it is clamped to the axle and centered by setscrews J. The magnetic framework F is also preferably made up of softlaminated iron clamped between the two end pieces G, which have flangesX that abut against the laminated mass, the whole being held and clampedtogether by means of bolts Q, which are spaced around the circumferenceof the structure, and pass through the laminations and the flanges X.The laminations are sectors only, and do not extend more than one halfthe distance around the circle formed by these sectors. The end pieces Gare of a spheroidal shape, as shown and are provided with circularopenings at their outer ends to carry the journals H. These end pieces Gare split axially into halves, which may be separated, put around theaxle and the inductor, and then joined solidly together by means overthe axle A and inductor I.

of lugs and bolts K. The journals H are also split axially into halves,but have no lugs nor bolts to hold them together, as the end frames Ghold them suh iciently. They are provided with flanges on either end, asshown, to prevent lateral displacement.

The nragne'tic frame F is shown in 2 as having polar project-ions onwhich the windings are placed. This form is preterable owing to thegreater ease of connecting the separate windings together after theframe has been split and put in place A distributed winding, however,may be used if desired.

The whole structure forms a completely inclosed, light dynamo of simpleand solid construction. It is, however, to be understood that this formis merely shown here as illustrative of the character of the system andthe invention is by no means limited by this design.

The method of suspension is preferably as indicated in 1 and 2. Rods 1are tastened into lugs 9 on the outer :trame. These rods pass upwardsthrough iron cross pieces 2, which run from one truck beam across to theopposite one.

Compression springs 23, through which the rods 1 pass support theweight, the upper ends oi? the springs pressing upwards on the washersand nuts l of the rods 1, and the lower ends resting on the cross pieces2. The springs are adjusted to exert a pressure just equal to the weightof the dynamo so that the car axle is relieved of this weight. Thisflexible support allows the dynamo to rise and tall with respect to thetruck as the car wheels and axle rise and tall.

The magnetic drag on the field frame F which tends to cause it to rotatewith the inductor is resisted by the piece 8 which is fastened to andprojects outwardly from the field frame. This piece projects up into anopening 7 which is termed in an iron cross bar (3, this bar being alsofastened to the truck beams. The torque of F in either direction is resited by the sides of the opening 7 in the cross beam 6, acting against 8.Vertical motion, however, is not restrained and the necessary motion ofthe dynamo with respect to the truck is not interfered with.

There are many possible variations of this invention that will suggestthemselves to those skilled in the art, and it is also obvious that someportions may be used without others.

Tfithout enumerating variations equivalents l. claim as my invention '1.In combination with the sills, cross pieces and axle of a car truck, ofan alternating current dynamo electric machine having stationary andmoving parts formed in separable sections the cooperating parts therotor being secured directly to the axle, and the parts of the statorinclosing the rotor and being suspended from the truck cross piecesindependently of the axle, and means for cushioning the suspension ofthe stator.

in combination with the sills, cross pieces and axle of a car truck, ofan alternating current dynamo electric machine having stationary andmoving parts formed in separable sections the co perating parts of tnerotor being secured directly to the axle, and the parts of the statorinclosing the rotor and bein suspended from the truck cross piecesindependently of the axle, n'ieans :tor cushioning the suspension of thestator and means permitting vertical play between the stator and truckfor resisting torque in the stator..

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

and

LAMAR LYNDON.

\Vitnesses lixnoLn B. Arnixs, Omx A. Fos'rmi.

